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101.
Zhang Zhe Fan Junxia Long Chuannan He Bin Hu Zhihong Jiang Chunmiao Li Yongkai Ma Long Wen Jingshang Zou Xiaojin Chen Yuan Ge Zhenxiang Zeng Bin 《Journal of industrial microbiology & biotechnology》2019,46(12):1769-1780
Journal of Industrial Microbiology & Biotechnology - The ZRT, IRT-like protein (ZIP) family exists in many species and plays an important role in many biological processes, but little is known... 相似文献
102.
Shiqin Yu Qifeng Mo Yingwen Li Yongxing Li Bi Zou Hanping Xia Zhi'an Li Faming Wang 《Ecology and evolution》2019,9(19):11344-11352
In the tropics of South China, climate change induced more rainfall events in the wet season in the last decades. Moreover, there will be more frequently spring drought in the future. However, knowledge on how litter decomposition rate would respond to these seasonal precipitation changes is still limited. In the present study, we conducted a precipitation manipulation experiment in a tropical forest. First, we applied a 60% rainfall exclusion in April and May to defer the onset of wet season and added the same amount of water in October and November to mimic a deferred wet season (DW); second, we increased as much as 25% mean annual precipitation into plots in July and August to simulate a wetter wet season (WW). Five single‐species litters, with their carbon to nitrogen ratio ranged from 27 to 49, and a mixed litter were used to explore how the precipitation change treatments would affect litter decomposition rate. The interaction between precipitation changes and litter species was not significant. The DW treatment marginally accelerated litter decomposition across six litter types. Detailed analysis showed that DW increased litter decomposition rate in the periods of January to March and October to December, when soil moisture was increased by the water addition in the dry season. In contrast, WW did not significantly affect litter decomposition rate, which was consistent with the unchanged soil moisture pattern. In conclusion, the study indicated that regardless of litter types or litter quality, the projected deferred wet season would increase litter decomposition rate, whereas the wetter wet season would not affect litter decomposition rate in the tropical forests. This study improves our knowledge of how tropical forest carbon cycling in response to precipitation change. 相似文献
103.
Chao-Nan Fu Zhi-Qiong Mo Jun-Bo Yang Jie Cai Lin-Jiang Ye Jia-Yun Zou Han-Tao Qin Wei Zheng Peter M. Hollingsworth De-Zhu Li Lian-Ming Gao 《Molecular ecology resources》2022,22(1):404-414
Standard plant DNA barcodes based on 2–3 plastid regions, and nrDNA ITS show variable levels of resolution, and fail to discriminate among species in many plant groups. Genome skimming to recover complete plastid genome sequences and nrDNA arrays has been proposed as a solution to address these resolution limitations. However, few studies have empirically tested what gains are achieved in practice. Of particular interest is whether adding substantially more plastid and nrDNA characters will lead to an increase in discriminatory power, or whether the resolution limitations of standard plant barcodes are fundamentally due to plastid genomes and nrDNA not tracking species boundaries. To address this, we used genome skimming to recover near-complete plastid genomes and nuclear ribosomal DNA from Rhododendron species and compared discrimination success with standard plant barcodes. We sampled 218 individuals representing 145 species of this species-rich and taxonomically difficult genus, focusing on the global biodiversity hotspots of the Himalaya-Hengduan Mountains. Only 33% of species were distinguished using ITS+matK+rbcL+trnH-psbA. In contrast, 55% of species were distinguished using plastid genome and nrDNA sequences. The vast majority of this increase is due to the additional plastid characters. Thus, despite previous studies showing an asymptote in discrimination success beyond 3–4 plastid regions, these results show that a demonstrable increase in discriminatory power is possible with extensive plastid genome data. However, despite these gains, many species remain unresolved, and these results also reinforce the need to access multiple unlinked nuclear loci to obtain transformative gains in species discrimination in plants. 相似文献
104.
光是影响植物分枝的重要外在环境因素,但光信号因子HY5(ELONGATED HYPOCOTYL5)是否调控植物分枝目前尚不清楚。创制了HY5转基因超表达植株,并获得商业化T-DNA插入突变体纯合植株。通过比较野生型(WT)、超表达植株(HY5-OE)、突变体(hy5-215)的分枝数目发现,与野生型相比,超表达植株分枝数目显著增加,而突变体分枝数目则显著减少。进一步比较这些遗传材料的拟南芥植株分枝的负调控关键因子BRC1(BRANCHED1)转录本水平差异,发现与野生型相比,超表达植株中BRC1转录本显著下调、突变体中显著上调。研究结果表明,HY5通过抑制拟南芥分枝关键负调控因子BRC1的转录水平,进而促进拟南芥的分枝。研究结果为阐明HY5调控分枝的生物学功能提供了一定的理论依据。 相似文献
105.
The yeast acylglycerol acyltransferase LCA1 is a key component of Lands cycle for phosphatidylcholine turnover 总被引:1,自引:0,他引:1
Cellular phospholipids undergo deacylation and reacylation through a process known as Lands cycle. In this report, we provide evidence demonstrating that yeast YOR175c, herein designated as LCA1, encodes a key component of the Lands cycle, the acyl-CoA: lysophosphatidylcholine acyltransferase (LPCAT). Deletion of LCA1 resulted in a drastic reduction in LPCAT activity, while over expression led to a several fold increase in enzyme activity. We further show that disruption of LCA1 caused an enhanced production of glycerophosphorylcholine, a product of phosphatidylcholine (PC) deacylation and that the lysophosphatidic acid acyltransferase SLC1 was not involved in this process. Identification of LCA1 provides an essential molecular tool for further study of Lands cycle in PC turnover. 相似文献
106.
Guo-Lan Liu Han-Wei Mei Xin-Qiao Yu Gui-Hua Zou Hong-Yan Liu Ming-Shou Li Liang Chen Jin-Hong Wu Li-Jun Luo 《植物学报(英文版)》2007,49(10):1464-1469
Two upland rice varieties (IRAT109, IAPAR9) and one lowland rice variety (Zhenshan 97B) were planted in summer and treated with both normal (full water) and drought stress in the reproductive stage. Panicle water potential (PWP) and leaf water potential (LWP) were measured every 1.0-1.5 h over 24 h on sunny days. Both PWP and LWP of upland varieties started to decrease later, maintained a higher level and recovered more quickly than that of the lowland variety. The results show that PWP can be used as an indicator of plant water status based on the parallel daily changes, and the high correlation between PWP and LWP. Similar correlations were also observed between PWP, LWP and eight traits related to plant growth and grain yield formation. PWP seemed to be more effective for distinguishing the upland rice varieties with different drought-tolerant ability. Differences in PWP and LWP between upland and lowland rice varieties were also observed at noon even under normal water conditions, implying the incorporation of the drought-tolerant mechanism to improve the photosynthesis and yield of traditional paddy rice. 相似文献
107.
108.
109.
Yuan Bo Wu Wei Yue Shengjuan Zou Penghui Yang Ruoting Zhou Xiaode 《International microbiology》2022,25(3):571-586
International Microbiology - The photovoltaic power station in Qinghai has been built for 8 years; however, its impact on the regional soil ecological environment has not been studied in... 相似文献
110.
Xiao-Li Feng Dandan Yu Mi Zhang Xiaohong Li Qing-Cui Zou Wentai Ma Jian-Bao Han Ling Xu Cuixian Yang Wang Qu Zhong-Hua Deng Junyi Long Yanghaopeng Long Mingkun Li Yong-Gang Yao Xing-Qi Dong Jianxiong Zeng Ming-Hua Li 《中国病毒学》2022,37(6):804-812
The continuously arising of SARS-CoV-2 variants has been posting a great threat to public health safety globally, from B.1.17 (Alpha), B.1.351 (Beta), P.1 (Gamma), B.1.617.2 (Delta) to B.1.1.529 (Omicron). The emerging or reemerging of the SARS-CoV-2 variants of concern is calling for the constant monitoring of their epidemics, pathogenicity and immune escape. In this study, we aimed to characterize replication and pathogenicity of the Alpha and Delta variant strains isolated from patients infected in Laos. The amino acid mutations within the spike fragment of the isolates were determined via sequencing. The more efficient replication of the Alpha and Delta isolates was documented than the prototyped SARS-CoV-2 in Calu-3 and Caco-2 cells, while such features were not observed in Huh-7, Vero E6 and HPA-3 cells. We utilized both animal models of human ACE2 (hACE2) transgenic mice and hamsters to evaluate the pathogenesis of the isolates. The Alpha and Delta can replicate well in multiple organs and cause moderate to severe lung pathology in these animals. In conclusion, the spike protein of the isolated Alpha and Delta variant strains was characterized, and the replication and pathogenicity of the strains in the cells and animal models were also evaluated. 相似文献